Floating concrete structure deep sea aquaculture net cage health monitoring system

Abstract

The invention provides a floating concrete structure deep sea aquaculture net cage health monitoring system which comprises a structure safety monitoring subsystem, an environment corrosion monitoring subsystem, a material durability monitoring subsystem, a data acquisition control module, a 5G information transmission module, a self-powered system and a monitoring platform. Various sensors are installed inside and outside the aquaculture net cage, the structural load, vertical displacement, environmental parameters and material performance changes of the net cage are monitored in real time, and the running state of the net cage is evaluated through an early warning mechanism. According to the invention, integrated monitoring of the safety and durability of the deep and far sea concrete structure culture net cage is realized, potential problems can be found in time, the operation and maintenance cost is reduced, the intelligent management level is improved, and the development of deep and far sea marine ranches is supported.

Description

Technical Field

[0001] The present invention relates to the technical field of health monitoring for deep - sea and far - sea aquaculture cages, and in particular to a health monitoring system for floating concrete - structure deep - sea and far - sea aquaculture cages. Background Art

[0002] Vigorously developing marine pastures to turn the vast ocean into a "blue granary" is one of the important measures to practice the "big food concept". Traditional marine aquaculture focuses on the inshore and shallow - sea areas. As the aquaculture space in the inshore fishery is becoming increasingly saturated, the trend of seawater aquaculture moving towards the deep - sea and far - sea is inevitable. Currently, most aquaculture cages are made of steel structures, but corrosion problems are prominent in the marine environment. Concrete - structure aquaculture cages are currently widely favored due to their good durability. Due to the strong winds, high waves, strong radiation in the deep - sea and far - sea areas, and frequent seasonal typhoon attacks, the overall structure of the cage platform is at high service safety risks (including structural safety and material durability) due to factors such as loads, wind and waves, and long - term chloride salt erosion. Moreover, since the aquaculture cages are far from land, the maintenance and repair are difficult and the cost is high. Currently, for floating concrete - structure deep - sea aquaculture, it is still in the experimental and development stage, and the monitoring technology for the service state of structures in the deep - sea and far - sea environment is even more scarce. Most of the publicly available monitoring technologies related to marine pastures mainly focus on the state monitoring of steel - structure aquaculture cages (such as Chinese invention patents CN116861750B, CN202120257811.5), and evaluate the operation safety of the cages by monitoring structural deformation, vibration, etc. However, the healthy service of concrete - structure cages not only involves safety but also durability. The degradation of material and structural properties caused by the harsh marine environment has become a major problem threatening the healthy service of cages. None of the above - mentioned publicly available patents can achieve the monitoring and evaluation of the overall health status of floating cages, especially concrete - structure aquaculture cages, covering structural safety, environmental corrosion, and material durability. Therefore, developing an integrated operation - state health monitoring and evaluation system covering cage structural safety, environmental corrosion, and material durability plays an important role in ensuring the operation safety of deep - sea and far - sea aquaculture cages. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a health monitoring system for floating concrete - structure deep - sea and far - sea aquaculture cages to solve at least the above problems.

[0004] The technical solution adopted by the present invention is as follows: A health monitoring system for floating concrete - structure deep - sea and far - sea aquaculture cages, comprising: A structural safety monitoring subsystem for monitoring the structural load and vertical displacement of the cage; An environmental corrosion monitoring subsystem for monitoring the parameters of the atmospheric environment above water and the marine environment below water; The material durability monitoring subsystem is used to monitor the chloride ion diffusion concentration in concrete, the corrosion state of steel bars, cavity leakage, and concrete appearance cracks; The data acquisition and control module is used to collect the monitoring data of each subsystem; The 5G information transmission module is used to transmit the monitoring data to the monitoring platform; The self-power supply system is used to provide power support for the system; The monitoring platform is used to receive and display the monitoring data and set warning values to realize the evaluation of the operation status of the cage;

[0005] Furthermore, the structural safety monitoring subsystem includes: The stress and strain monitoring sensors embedded in the stress concentration area of the concrete structure are used to monitor the structural load data of the cage; The tilt angle sensors arranged on the upper surface of the cage are used to monitor the vertical displacement data of the cage under the action of wave current.

[0006] Furthermore, the stress concentration area of the concrete structure is at the pipe joint, and the stress and strain monitoring sensors are fixed on the outermost steel bars and then concrete is poured.

[0007] Furthermore, the environmental corrosion monitoring subsystem includes: The underwater environmental monitoring part includes a tide gauge and a flow velocity meter arranged in the middle sea area of the cage, which are used to monitor the ocean tide level and water flow velocity; The above-water environmental monitoring part includes a thermometer and a wind direction and wind speed meter arranged on the upper part and side of the cage, which are used to monitor the atmospheric temperature, wind direction, and wind speed.

[0008] Furthermore, the material durability monitoring subsystem includes: The steel bar corrosion meter and gradient chloride ion probe embedded within the concrete protective layer are used to monitor the corrosion state of steel bars and the chloride ion diffusion concentration in concrete; The leakage meter installed in the cavity of the concrete pipe joint is used to monitor external seawater leakage; The crack monitoring sensors installed outside the concrete pipe joint are used to monitor crack evolution.

[0009] Furthermore, the data acquisition and control module and the 5G information transmission module adopt a multi-channel mode to realize the acquisition and transmission of data from all monitoring sensors and are integrated into an electrical box with a waterproof level of IP67 or above.

[0010] Furthermore, the self-power supply system includes a solar power generation device, a wind power generation device, and a storage battery, which are used to provide power support for data acquisition and transmission.

[0011] Further, the monitoring platform is connected to the 5G information transmission module in a wireless mode and is used for: Real-time display of the operating status and monitoring data of various monitoring sensors; Set warning values. When the structural safety monitoring index is greater than 0.8 times the design value, a yellow warning is issued. When it is greater than the design value or more than 10 yellow warnings are found within one month, a red warning is issued; When the environmental corrosion monitoring index and the material durability monitoring index are greater than 0.8 times the design value, a yellow warning is issued. When it is greater than the design value, a red warning is issued; When a yellow warning appears, start the overall health assessment. When a red warning appears, suspend operation and start a special inspection and assessment.

[0012] Compared with the prior art, the beneficial effects of the present invention are: The present invention proposes a health monitoring system for a floating concrete structure deep-sea aquaculture cage. By comprehensively monitoring the key indicators affecting the safe operation of the deep-sea concrete structure aquaculture cage during its service period, including structural load, tide level, water flow velocity, wind speed and direction, air temperature, vertical displacement, chloride salt erosion, steel bar corrosion, concrete appearance cracks, etc., it is possible to reasonably control the integrated service health status including safety and durability of the deep-sea concrete structure aquaculture cage under the continuous action of long-term light-wind-wave-current, chloride salt erosion and the influence of extreme disasters such as typhoons. Potential problems can be discovered in a timely manner based on the monitoring data, reducing the economic costs such as operation and maintenance, inspection and repair of the aquaculture cage, improving the intelligent management level, and supporting the development of deep-sea marine pastures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the preferred embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of a health monitoring system for a floating concrete structure deep-sea aquaculture cage proposed by an embodiment of the present invention.

[0015] Figure 2 It is a schematic plan view of the structure of a health monitoring system for a floating concrete structure deep-sea aquaculture cage proposed by an embodiment of the present invention.

[0016] Figure 3 It is a schematic cross-sectional view of the overall structure of a health monitoring system for a floating concrete structure deep-sea aquaculture cage proposed by an embodiment of the present invention.

[0017] In the figure, 11 is the first net box pipe section, 12 is the second net box pipe section, 13 is the third net box pipe section, 14 is the fourth net box pipe section, 15 is the fifth net box pipe section, 16 is the sixth net box pipe section, 21 is the first stress-strain sensor, 22 is the second stress-strain sensor, 23 is the third stress-strain sensor, 24 is the fourth stress-strain sensor, 3 is the steel bar corrosion meter, 4 is the gradient chloride ion probe, 51 is the first leakage meter, 52 is the second leakage meter, 53 is the third leakage meter, 54 is the fourth leakage meter, 55 is the fifth leakage meter, 56 is the sixth leakage meter, 61 is the first tilt angle monitoring sensor, 62 is the second tilt angle monitoring sensor, 63 is the third tilt angle monitoring sensor, 64 is the fourth tilt angle monitoring sensor, 65 is the fifth tilt angle monitoring sensor, 66 is the sixth tilt angle monitoring sensor, 71 is the first crack monitoring sensor, 72 is the second crack monitoring sensor, 73 is the third crack monitoring sensor, 74 is the fourth crack monitoring sensor, 75 is the fifth crack monitoring sensor, 76 is the sixth crack monitoring sensor, 8 is the thermometer, 9 is the wind direction and wind speed meter, 101 is the data acquisition and control module, 102 is the 5G information transmission module, 201 is the self-power supply system, 301 is the installed tide gauge, 302 is the flow meter, and 401 is the monitoring platform. Detailed implementation manners

[0018] In order to make the objectives, technical solutions, and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention. It should be understood that the present invention is not limited by the exemplary embodiments described herein. Based on the embodiments of the present invention described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, some technical features well known to the art are not described to avoid confusion with the present invention.

[0020] It should be understood that the present invention can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and will fully convey the scope of the present invention to those skilled in the art.

[0021] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present invention. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, identify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0022] In order to thoroughly understand the present invention, detailed structures will be presented in the following description to illustrate the technical solutions proposed by the present invention. The alternative embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments.

[0023] Referring to Figures 1 - 3 , the present invention provides a health monitoring system for a floating concrete structure deep - sea and far - sea aquaculture cage, comprising: A structural safety monitoring subsystem for monitoring the structural load and vertical displacement of the cage; An environmental corrosion monitoring subsystem for monitoring the parameters of the water - based atmospheric environment and the underwater marine environment; A material durability monitoring subsystem for monitoring the chloride ion diffusion concentration in concrete, the corrosion state of steel bars, cavity leakage and concrete surface cracks; A data acquisition and control module for collecting the monitoring data of each subsystem; A 5G information transmission module for transmitting the monitoring data to the monitoring platform; A self - power supply system for providing power support for the system; A monitoring platform for receiving and displaying the monitoring data and setting warning values to realize the assessment of the operation status of the cage.

[0024] The structural safety monitoring subsystem includes: Stress - strain monitoring sensors embedded in the stress - concentration area of the concrete structure, for monitoring the structural load data of the cage; Inclination sensors arranged on the upper surface of the cage, for monitoring the vertical displacement data of the cage under the action of wave currents.

[0025] The stress - concentration area of the concrete structure is at the pipe - joint, and the stress - strain monitoring sensors are fixed on the outermost steel bars and then concrete is poured.

[0026] The environmental corrosion monitoring subsystem includes: An underwater environment monitoring part, including a tide gauge and a current meter arranged in the middle sea area of the cage, for monitoring the ocean tide level and the water flow velocity; The water environment monitoring section includes a thermometer and an anemometer installed on the upper and side parts of the cage, which are used to monitor the atmospheric temperature, wind direction and wind speed.

[0027] The material durability monitoring subsystem includes: A reinforcing bar corrosion meter and a gradient chloride ion probe embedded within the concrete protective layer, which are used to monitor the corrosion state of the reinforcing bars in the concrete and the chloride ion diffusion concentration; A leakage meter installed inside the cavity of the concrete pipe section, which is used to monitor the external seawater leakage; A crack monitoring sensor installed outside the concrete pipe section, which is used to monitor the crack evolution.

[0028] The data acquisition and control module and the 5G information transmission module adopt a multi-channel mode to achieve the acquisition and transmission of data from all monitoring sensors, and are integrated into an electrical box with a waterproof rating of IP67 or above.

[0029] The self-power supply system includes a solar power generation device, a wind power generation device and a storage battery, which are used to provide power support for data acquisition and transmission.

[0030] The monitoring platform is connected to the 5G information transmission module through a wireless mode and is used for: Real-time display of the operating status and monitoring data of various monitoring sensors; Setting warning values. When the structural safety monitoring index is greater than 0.8 times the design value, a yellow warning is issued. When it is greater than the design value or more than 10 yellow warnings are found within one month, a red warning is issued; When the environmental corrosion monitoring index and the material durability monitoring index are greater than 0.8 times the design value, a yellow warning is issued. When it is greater than the design value, a red warning is issued; When a yellow warning appears, an overall health assessment is started. When a red warning appears, the operation is suspended and a special inspection and assessment is started.

[0031] Exemplarily, the cage pipe sections include the first cage pipe section 11, the second cage pipe section 12, the third cage pipe section 13, the fourth cage pipe section 14, the fifth cage pipe section 15, and the sixth cage pipe section 16. The stress-strain sensors include the first stress-strain sensor 21, the second stress-strain sensor 22, the third stress-strain sensor 23, and the fourth stress-strain sensor 24. The seepage gauges include the first seepage gauge 51, the second seepage gauge 52, the third seepage gauge 53, the fourth seepage gauge 54, the fifth seepage gauge 55, and the sixth seepage gauge 56. The tilt angle monitoring sensors include the first tilt angle monitoring sensor 61, the second tilt angle monitoring sensor 62, the third tilt angle monitoring sensor 63, the fourth tilt angle monitoring sensor 64, the fifth tilt angle monitoring sensor 65, and the sixth tilt angle monitoring sensor 66. The crack monitoring sensors include the first crack monitoring sensor 71, the second crack monitoring sensor 72, the third crack monitoring sensor 73, the fourth crack monitoring sensor 74, the fifth crack monitoring sensor 75, and the sixth crack monitoring sensor 76; For the installation of the stress-strain sensors: Before the construction of the aquaculture cage, select one of the six pipe sections, namely the first cage pipe section 11. Install the first stress-strain sensor 21, the second stress-strain sensor 22, the third stress-strain sensor 23, and the fourth stress-strain sensor 24 at the four top corners of the joint section of the first cage pipe section 11. Fix the sensors on the outermost steel bars, and lead the wires out of the section; For the installation of the steel bar corrosion meter 3: Select one of the six pipe sections, namely the first cage pipe section 11. Install the steel bar corrosion meter 3 within the designed concrete cover range and electrically connect it to the outermost steel bars; For the installation of the gradient chloride ion probe: Install the gradient chloride ion probe 4 beside the steel bar corrosion meter. It is required that the cover where the outermost probe is located is 10 mm, and the innermost probe and the outermost steel bars are in the same plane; Pour the concrete material into the pipe section formwork and cure it to form; For the installation of the seepage gauges: Install the first seepage gauge 51, the second seepage gauge 52, the third seepage gauge 53, the fourth seepage gauge 54, the fifth seepage gauge 55, and the sixth seepage gauge 56 correspondingly in the cavities of the formed first cage pipe section 11, second cage pipe section 12, third cage pipe section 13, fourth cage pipe section 14, fifth cage pipe section 15, and sixth cage pipe section 16. After leading out the wires, splice the first cage pipe section 11, second cage pipe section 12, third cage pipe section 13, fourth cage pipe section 14, fifth cage pipe section 15, and sixth cage pipe section 16 to form the aquaculture cage structure; For the installation of the inclination angle monitoring sensors: The first inclination angle monitoring sensor 61, the second inclination angle monitoring sensor 62, the third inclination angle monitoring sensor 63, the fourth inclination angle monitoring sensor 64, the fifth inclination angle monitoring sensor 65, and the sixth inclination angle monitoring sensor 66 are respectively installed and fixed in the middle areas of the upper surfaces of the first cage pipe section 11, the second cage pipe section 12, the third cage pipe section 13, the fourth cage pipe section 14, the fifth cage pipe section 15, and the sixth cage pipe section 16. For the installation of the crack monitoring sensors: One widest crack is selected on each of the first cage pipe section 11, the second cage pipe section 12, the third cage pipe section 13, the fourth cage pipe section 14, the fifth cage pipe section 15, and the sixth cage pipe section 16. The first crack monitoring sensor 71, the second crack monitoring sensor 72, the third crack monitoring sensor 73, the fourth crack monitoring sensor 74, the fifth crack monitoring sensor 75, and the sixth crack monitoring sensor 76 are respectively fixed at the selected crack positions. For the installation of the thermometer and the wind direction and speed meter: The thermometer 8 and the wind direction and speed meter 9 are installed on the upper surface of the first cage pipe section 11, and the thermometer 8 and the wind direction and speed meter 9 are respectively 1 meter away from the upper surface of the first cage pipe section 11. A data acquisition box with an IP67 waterproof rating is installed on the upper surface of the first cage pipe section 11, and the data acquisition control module 101 and the 5G information transmission module 102 are embedded in the electrical box. The data acquisition control module 101 adopts a multi-channel signal acquisition mode to cover all sensors in the monitoring system. The signal transmitter of the 5G information transmission module 102 is located on the top of the electrical box. All monitoring sensors are connected to the data acquisition control module 101 and the 5G information transmission module 102 through data wires. A solar self-power supply system 201 is installed beside the data acquisition box and supplies power to the data acquisition control module 101 and the 5G information transmission module 102. To ensure the sustainability of the power supply system, energy storage batteries are installed in the self-power supply system. After the aquaculture cage is towed to the designated sea area, a tide gauge 301 and a current meter 302 are installed in the middle of the cage, and the two sensors are connected to the data acquisition control module 101 and the 5G information transmission module 102 through data wires. Connect the self-power supply system 201, debug the three subsystems of structural safety monitoring, environmental corrosion monitoring, and material durability monitoring, and check the output of the monitoring data of each sensor on the monitoring platform 401. View the evolution laws of structural safety indicators such as structural stress and strain, vertical displacement, environmental factors such as ocean tide level, water flow velocity, atmospheric temperature, wind direction, and wind speed, and material durability monitoring data such as the corrosion potential of steel bars in concrete, chloride ion content distribution, and external crack width of concrete over time through the monitoring platform 401; Set safety design values for the indicators of different monitoring sensors on the monitoring platform 401. When the monitoring data of the structural safety indicators is greater than 0.8 times the design value, a yellow warning is issued. When it is greater than the design value or there are more than 10 yellow warnings within one month, a red warning is issued; when the monitoring data of the environmental corrosion indicators and the material durability indicators is greater than 0.8 times the design value, a yellow warning is issued. When it is greater than the design value, a red warning is issued; when a yellow warning appears, an overall health assessment of the cage should be carried out. When a red warning appears, the operation should be suspended and a special inspection and assessment should be carried out.

[0032] During the construction and installation of the cage, this system arranges sensors through methods such as embedding, fixing, and external pasting to ensure that the monitoring covers key parts: In the structural safety monitoring subsystem, stress and strain sensors can be embedded in the concrete pipe joint (stress concentration area) to monitor the change of structural load, and can be fixed on the outermost steel bars and then concrete is poured to ensure synchronous stress with the structure. The tilt angle sensor can be arranged on the upper surface of the cage to monitor the vertical displacement (such as the tilt caused by wave impact), so as to be able to monitor the structural response of the cage under dynamic loads such as wind and waves, ocean currents in real time and evaluate the overall stability.

[0033] In the environmental corrosion monitoring subsystem, underwater environment monitoring (tide gauge 301, flow velocity meter 302): arranged in the surrounding waters of the cage to monitor the scouring effect of tides and water flow on the structure, and above-water environment monitoring (thermometer 8, wind direction and wind speed meter 9): installed on the upper and side surfaces of the cage to record atmospheric corrosion factors (such as salt spray, temperature and humidity), so as to analyze the correlation between environmental parameters and structural corrosion and predict long-term durability changes.

[0034] In the material durability monitoring subsystem, the steel bar corrosion meter 3 and chloride ion probe 4 can be embedded in the concrete protective layer to monitor the chloride ion penetration and the corrosion rate of steel bars. The leakage meter is installed in the concrete cavity to detect seawater leakage (such as penetration caused by cracks). The crack monitoring sensor is attached to the concrete surface to record the crack propagation trend, so as to directly evaluate the deterioration degree of the concrete material and prevent structural failure caused by corrosion, cracks, etc.

[0035] The data acquisition and control module 101 can adopt a multi-channel mode, so as to be able to collect the data of all sensors (stress, displacement, chloride ion concentration, temperature, etc.) in real time. The data acquisition and control module 101 is integrated in a waterproof electrical box (IP67) and can adapt to the high-humidity and high-salt environment in the deep sea.

[0036] The 5G information transmission module 102 transmits data to the monitoring platform in real time through the 5G network, ensuring that remote operation and maintenance personnel can obtain the status of the fish cage in a timely manner.

[0037] The self-powered system 201 (solar energy + wind energy + energy storage battery) can solve the problem of power supply in the deep sea and ensure long-term stable monitoring.

[0038] The monitoring platform 401 dynamically evaluates the safety and durability of the fish cage based on preset thresholds: For structural safety warnings: Yellow warning: Load > 0.8 times the design value (such as short-term overloading during typhoon).

[0039] Red warning: Load > design value, or 10 yellow warnings accumulated within 1 month (the structure may be damaged).

[0040] In response to the above yellow and red warnings, maintenance personnel can take corresponding measures. For example, start an overall evaluation during a yellow warning and suspend operation and perform maintenance during a red warning.

[0041] For durability warnings: Yellow warning: Chloride ion concentration > 0.8 times the limit value (the risk of corrosion increases).

[0042] Red warning: Chloride ion concentration > limit value, or crack width exceeds the standard (the material has been damaged).

[0043] In response to the above yellow and red warnings, maintenance personnel can take corresponding measures. For example, perform anti-corrosion treatment in advance or perform local repair to avoid further deterioration of the structure.

[0044] This system realizes the following by reasonably deploying sensors during the installation stage of the fish cage, combining real-time data collection, intelligent analysis, and warning mechanisms: Structural safety monitoring → Prevent sudden damage (such as overturning caused by typhoon). Material durability monitoring → Delay the deterioration of concrete and reduce long-term maintenance costs. Environmental corrosion correlation analysis → Optimize the design of the fish cage to adapt to different sea area conditions. This system is applicable to ocean engineering structures such as deep-sea concrete aquaculture fish cages and floating wind power foundations. This system can provide reliable health monitoring technical support for the "marine ranch".

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A floating concrete structure deep-sea aquaculture cage health monitoring system, characterized in that: include: Structural safety monitoring subsystem, used to monitor cage structural load and vertical displacement; Environmental corrosion monitoring subsystem, used to monitor above-water atmospheric environment and underwater marine environment parameters; Material durability monitoring subsystem, used to monitor chloride ion diffusion concentration in concrete, steel bar corrosion status, cavity leakage and concrete appearance cracks; Data acquisition control module, used to collect monitoring data of each subsystem; 5G information transmission module, used to transmit monitoring data to the monitoring platform; Self-powered system, used to provide power support for the system; The monitoring platform is used to receive and display monitoring data and set early warning values ​​to evaluate the operating status of the cage.

2. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 1 is characterized in that: The structural safety monitoring subsystem includes: Stress and strain monitoring sensors embedded in the stress concentration area of ​​the concrete structure are used to monitor the load data of the cage structure; The tilt angle sensor arranged on the upper surface of the cage is used to monitor the vertical displacement data of the cage under the action of wave current.

3. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 2 is characterized in that: The stress concentration area of ​​the concrete structure is the pipe joint, and the stress-strain monitoring sensor is fixed on the outermost steel bar after pouring concrete.

4. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 1 is characterized in that: The environmental corrosion monitoring subsystem includes: The underwater environment monitoring part includes a tide gauge and a current meter placed in the sea area between the cages to monitor the ocean tide level and water flow rate; The aquatic environment monitoring part includes thermometers and wind direction and anemometers arranged on the top and sides of the cage, which are used to monitor atmospheric temperature, wind direction and wind speed.

5. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 1 is characterized in that: The material durability monitoring subsystem includes: The steel corrosion meter and gradient chloride ion probe embedded in the concrete cover are used to monitor the steel corrosion status and chloride ion diffusion concentration in the concrete; A lysimeter installed in the cavity of the concrete pipe segment to monitor external seawater leakage; Crack monitoring sensors installed on the outside of concrete pipe sections are used to monitor crack evolution.

6. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 1 is characterized in that: The data acquisition control module and 5G information transmission module adopt a multi-channel mode to realize the collection and transmission of all monitoring sensor data, and are integrated into an electrical box with a waterproof level of IP67 or above.

7. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 1 is characterized in that: The self-powered system includes a solar power generation device, a wind power generation device and an energy storage battery, which are used to provide power support for data collection and transmission.

8. The floating concrete structure deep-sea aquaculture cage health monitoring system according to claim 1 is characterized in that: The monitoring platform is connected to the 5G information transmission module via a wireless mode, and is used to: Real-time display of the operating status and monitoring data of various monitoring sensors; Set the warning value. When the structural safety monitoring index is greater than 0.8 times the design value, a yellow warning will be issued. When it is greater than the design value or more than 10 yellow warnings are found within a month, a red warning will be issued. When the environmental corrosion monitoring index and material durability monitoring index are greater than 0.8 times the design value, a yellow warning will be issued; when they are greater than the design value, a red warning will be issued; When a yellow warning appears, an overall health assessment will be initiated; when a red warning appears, operations will be suspended and special inspection and assessment will be initiated.

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